Community Composition and Structure of Soil Macro-Arthropods Under Agricultural Land Uses in the Bla

来源 :Agricultural Sciences in China | 被引量 : 0次 | 上传用户:xxm181512619
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Soil macro-arthropods in the black soil region in Jilin Province of China were investigated with the emphasis laid on the species richness and abundance in relation to the types of land-use, i.e., farm yard, farm land and Three-North Forest Shelter Belt. Soil macro-arthropods were hand-sorted in the field. A total of 2 357 soil macro-arthropod individuals was captured and fell into 70 families. The results suggested that type of land use affected the species richness and abundance of soil macro-arthropods. Agricultural practices had a strong impact on the soil macro-arthropods community, the conventional cultivations changed the vertical structure of macro-arthropods in the soil profile, and improved the richness and abundance of macro-arthropods in the lower soil layers especially in July. The results also showed that different groups of soil macro-arthropods had various responses to land use changes. Soil macro-arthropods in the black soil region in Jilin Province of China were investigated with the emphasis laid on the species richness and abundance in relation to the types of land-use, ie, farm yard, farm land and Three-North Forest Shelter Belt . A total of 2 357 soil macro-arthropods were was captured and fell into 70 families. The results suggested that type of land use affected the species richness and abundance of soil macro-arthropods Agricultural practices had a strong impact on the soil macro-arthropods community, the conventional cultivations changed the vertical structure of macro-arthropods in the soil profile, and improved the richness and abundance of macro-arthropods in the lower soil layers especially in July. The results also showed that different groups of soil macro-arthropods had various responses to land use changes.
其他文献
高考生物学科考试说明明确指出,考生应能对实验现象和结果进行解释和分析,应理解探究性实验的一般方法,能够制定课题研究的初步计划。从高考中的题型变化来看,生物综合能力测
随着信息技术的发展,数字化时代的到来,人们每天面对着大量的数据,从国民生产总值到天气预报,从人口预测到股票投资,统计存在于国民经济和日常生活的各个方面数据处理也因此变得更加重要具有统计的基本知识已成为每个现代公民必备的素质本文由现实生活中的部分现象探讨了概率知识的广泛应用.  概率,简单地说,就是一件事发生的可能性的大小比如你能指出下列事件中哪些是必然发生的,哪些是不可能发生的,哪些是随机发生的吗
教学内容人教版数学五年级上册第44—46页及“做一做”、第49页练习十第1—3题。教学过程一、情境引入屏幕显示:宁宁和波波登录了东方热线(网址:www.cnool.net),正在看一条新
1.您获得《绿色食品》杂志的渠道:◎书报亭、报摊◎邮局◎超市◎书店◎编辑部订阅◎赠阅◎其它2.您手中的一期《绿色食品》有多少人借阅过:◎2人以内◎3-5人◎5人以上3.您期
班主任的工作在学校的管理工作中占有重要的地位,学校的思想品德的教育工作以及安全工作的有效实施都是以班级为单位具体地进行落实的,这也就使得班主任对班级的工作十分的重
目的临床研究双层腓骨移植联合牙种植在下颌咬合功能重建中的价值。方法选择青岛大学附属医院口腔颌面外科2012年8月~2015年3月间8例行下颌骨节段性截骨的患者,一期行双层腓
每天清晨,总是站在校门口迎接第一个学生的到来;每天晚上,送走最后一个学生才离开;为了教师的快速发展,与每位教师零距离沟通,为他们量身定做发展目标,制定可行的职业生涯规
同学们,当你使用显示温度的杯子,当你看到无人驾驶的汽车,当你拿起手机与亲戚朋友交谈时……你有没有想到,这些伟大的发明起初可能仅仅是科学家的一个小小的奇思妙想?它们成
由于流化床具有固体粒子混合好和传热速率高的特点,对于流化床与浸入表面间传热的研究一直受到广泛的重视。但由于流化床传热机制的复杂性,流化床的传热优化设计仍然是困难的
西方哲学史上有一个著名的案例:在剑桥大学,维特根斯坦是大哲学家穆尔的学生。有一天,罗素问穆尔:“谁是你最好的学生?”穆尔毫不犹豫的说:“维特根斯坦。”“为什么?”“因